Patents by Inventor Katrin Hoeper

Katrin Hoeper has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dynamic cryptographic subscriber-device identity binding for subscriber mobility
    Patent number: 8555361
    Abstract: A method of authentication and authorization over a communication system is provided. The method performs a first authentication of a device based on a set of device identity and credentials. The first authentication includes creation of a first set of keying material. The method also includes performing a second authentication of a subscriber based on a set of subscriber identity and credentials. The second authentication includes creation of a second set of keying material. A set of compound key material is created with a key derivation mechanism that uses the first set of keying material and the second set of keying material. A binding token is created by cryptographically signing at least the device identity authenticated in the first authentication and the subscriber identity authenticated in the second authentication using the set of compound keying material. The signed binding token is exchanged for verification with an authenticating and authorizing party.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: October 8, 2013
    Assignee: Motorola Mobility LLC
    Inventors: Madjid F. Nakhjiri, Katrin Hoeper, Alexander Medvinsky
  • DYNAMIC CRYPTOGRAPHIC SUBSCRIBER-DEVICE IDENTITY BINDING FOR SUBSCRIBER MOBILITY
    Publication number: 20110213969
    Abstract: A method of authentication and authorization over a communication system is provided. The method performs a first authentication of a device based on a set of device identity and credentials. The first authentication includes creation of a first set of keying material. The method also includes performing a second authentication of a subscriber based on a set of subscriber identity and credentials. The second authentication includes creation of a second set of keying material. A set of compound key material is created with a key derivation mechanism that uses the first set of keying material and the second set of keying material. A binding token is created by cryptographically signing at least the device identity authenticated in the first authentication and the subscriber identity authenticated in the second authentication using the set of compound keying material. The signed binding token is exchanged for verification with an authenticating and authorizing party.
    Type: Application
    Filed: February 28, 2011
    Publication date: September 1, 2011
    Applicant: GENERAL INSTRUMENT CORPORATION
    Inventors: Madjid F. Nakhjiri, Katrin Hoeper, Alexander Medvinsky